Fantech VHR 704 Installation Manual

BEFORE INSTALLING UNIT VHR 704 Heat Recovery Ventilator VHR SERIES Installation Manual INSTALLATION, OPERATION AND MAINTENANCE MANUAL CAUTION - Before installation, careful consideration must be given to how this system will operate if connected to any other piece of mechanical equipment, i.e. a forced air furnace or air handler, operating at a higher static. After installation, the compatibility of the two pieces of equipment should be confirmed by measuring the airflow’s of the Heat Recovery or Energy Recovery Ventilators. It is always important to assess how the operation of any HRV/ERV may interact with vented combustion equipment (i.e. Gas Furnaces, Oil Furnaces, Wood Stoves, etc.). NEVER - install a ventilator in a situation where its normal operation, lack of operation or partial failure may result in the backdrafting or improper functioning of vented combustion equipment!!! Your ventilation system should be installed in conformance with the appropriate provincial or state requirements or in the absence of such requirements with the current edition of the National Building Code, and / or ASHRAE’s “ Good Engineering Practices”.

TECHNICAL DATA VHR 704 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Mounting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Location & Ducting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Air Flow Balancing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Modes Of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Optional Remote Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... 15 The Best Limited Warranty in the Business • The heat recovery aluminum core has a limited lifetime warranty. • The motors found in all Fantech HRV’s require no lubrication, and are factory balanced to prevent vibration and promote silent operation. • The limited warranty covers normal use. It does not apply to any defects, malfunctions or failures as a result of improper installation, abuse, mishandling, misapplication, fortuitous occurrence or any other circumstances outside Fantech’s control. • Inappropriate installation or maintenance may result in the cancellation of the warranty. • Any unauthorized work will result in the cancellation of the warranty. • Fantech is not responsible for any incidental or consequential damages incurred in the use of the ventilation system. • Fantech is not responsible for providing an authorized service centre near the purchaser or in the general area. • Fantech reserves the right to supply refurbished parts as replacements. • Transportation, removal and installation fees are the responsibility of the purchaser. • The purchaser is responsible to adhering to all codes in effect in his area. • The warranty is limited to 5 years on parts and 7 years on the motor from the date of purchase, including parts replaced during this time period. If there is no proof of purchase available, the date associated with the serial number will be used for the beginning of the warranty period. * This warranty is the exclusive and only warranty in effect relative to the ventilation system and all other warranties either expressed or implied are invalid. Sizing (Example) for maximum airflow normally required. HRVs are typically sized to ventilate the whole house at a minimum of 0.35 air changes per hour. To calculate, simply take the square footage of the house (including basement) and multi- ply by the height of the ceiling to get cubic volume. Then, divide by 60 and multiply by 0.35. Example: SQFT of House 1100 Basement 1100 Total SQFT 2200 Height of ceiling x 8 Cubic volume 17600 / 60 Maximum airflow required (CFM) 293 x 0.35 103 * Always consult your local code for sizing requirements in your area. Room classification Number of rooms CFM (L/s) CFM Required Master bedroom x 20 cfm (10 l/s) = Basement yes or no = Bedrooms x 10 cfm (5 l/s) = Living room x 10 cfm (5 l/s) = Others x 10 cfm (5 l/s) = Kitchen x 10 cfm (5 l/s) = Bathroom x 10 cfm (5 l/s) = Laundry room x 10 cfm (5 l/s) = Utility room x 10 cfm (5 l/s) = Total Ventilation Requirements (add last column ) = if yes add 20 cfm / 10 l/s if no = 0 1 cfm = 0.47189 l/s 1 l/s = 3.6 m3/hr Alternate Method ***Illustrations & images in this manual may not be exactly like unit purchase, these illustrations & images are for examples only.***

Brings a continuous supply of fresh air into a home while exhausting an equal amount of contaminated air. HRVs use what is called a “sensible” heat recovery core. This special core transfers heat from the exhaust air stream to the incoming air stream. Fresh incoming air is tempered by the heat that is transferred from the outgoing air to save on energy costs. The VHR 704 is equipped with automatic defrost mechanisms so even if you live in the coldest cli- mates you can use your HRV all year long. FEATURES • Super Compact Size • Top Port Design Fits in Tight Spaces • Includes Easy-Mount Wall Bracket • Aluminum Heat Recovery Core • 4” (100mm) Duct Connections • No Balancing Required • Easy Access Service Door • 3’ (914mm) Plug-in Power Cord • Automatic Exhaust Defrost Allows Units to Always Stay in Ventilation Mode • Only 26 lbs (12 kg) • Electrostatic Filters (washable) • Easy Core Guide Channels For Removing Core • Multiple Speed Operation ACCESSORIES • EDF1 – Multi-function control • RTS3 – 20/40/60 minute over-ride • RTS2 – 15 minute over-ride • COM 4P – 4˝ Weather Hoods (1 supply & 1 exhaust) • FEL 4 – 4˝ 90˚ Elbow • CG 4 – 4˝ Adjustable Grille SPECIFICATIONS CASE 24 gauge galvanized steel. Baked powder coated paint, grey. Cabinet fully insulated with 1" (25 mm) aluminum foil- face high density polystyrene foam to prevent condensation and meet the requirements of the UL 94HF. MOTORS Two (2) German-manufactured, factory-balanced ebm™ motors with backward curved blades. Motors come with permanently lubricated sealed ball bearings to guarantee long life and maintenance-free operation. Seven (7) year warranty. Steep fan curves requires no balancing of airflows. CORE Aluminum heat recovery core configured for efficient cross-flow ventilation. Core is 8.5˝ x 8.5˝ (216 x 216 mm) with a 8˝ (205 mm) depth. Cores are manufactured by Fantech to withstand extreme temperature variations. FILTERS Two (2) Washable Electrostatic Panel Type Air Filters, 8.5˝ (216mm) x 8˝ (203mm) x 0.125˝ (3mm). CONTROLS Unit is designed to accommodate the whole series of Fantech HRV controls. DEFROST A preset 5 minute defrost sequence is activated at an outdoor air temperature of 23°F (-5°C) and lower. During the defrost sequence, the supply blower shuts down & the exhaust blower switches into high speed to maximize the effectiveness of the defrost strategy. The unit then returns to normal operation for 25 minutes, and continues cycle. SERVICEABILITY Core, filters, motors and drain pan can be easily accessed through latched door. Core conveniently slides out on our new easy glide core guides. 10˝ (250mm) of clearance is recommended for removal of core. DUCT CONNECTION 4˝ (100mm) steel duct connections with rubber gasket for easy sealing. DRAIN 1/2˝ (13mm) OD (outside diameter) drain spout provided, entire bottom of unit covered by pan. WARRANTY Limited lifetime on aluminum core, 7 year on motors, and 5 year on parts. Distributed by: Fantech, reserves the right to modify, at any time and without notice, any or all of its products’ features, designs, components and specifications to maintain their technological leadership position.

Submitted by: Date: Qty: Model #: Comments: Project #: Location: Architect: Engineer: Contractor: Specifications and Ratings • Model: VHR 704 • Total assembled weight: 26 lbs (12kg) • Cabinet: 24 ga. steel w/powder coat finish • Motors: ebm motors w/backward curved blades • Filters: 2 washable electrostatic filters 8.5" (216mm) x 8" (205mm) x 0.125" (3mm) • Insulated with 1" (25 mm) aluminum foil-face high density polystyrene foam to prevent condensation and meet the requirements of the UL 94HF. • Core: Aluminum 8.5˝ (216mm) x 8.5˝ (216mm) x 8˝ (205mm) • Supply & exhaust ducts: 4˝ (100mm) • Mounting: Wall bracket included • Electrical requirements: Volts Frequency Amps Watts 115V 60Hz 0.36A 40W 3' plug-in power cord w/ 3-prong plug • Continuous ventilation mode of supply and exhaust airstreams • 10˝ (254mm) of clear- ance is recommended for removal of core Pa in wg L/s cfm L/s cfm L/s cfm 25 0.1 45 96 47 99 49 104 50 0.2 40 85 41 88 41 88 75 0.3 32 67 33 69 34 72 100 0.4 26 56 27 58 28 58 125 0.5 20 42 20 43 20 43 EXT. STATIC PRESSURE NET SUPPLY AIR FLOW GROSS AIR FLOW SUPPLY EXHAUST ˚C ˚F L/s cfm Heating 0 32 26 55 36 57 67 – 0 32 32 68 40 55 63 – 0 32 39 83 40 54 60 – -25 -13 34 72 35 53 66 – SUPPLY TEMPERATURE NET AIRFLOW Ventilation Performance Energy Performance POWER CONSUMED WATTS SENSIBLE RECOVERY EFFICIENCY APPARENT SENSIBLE EFFEC- TIVENESS LATENT RECOVERY/MOISTURE TRANSFER 0 0.1 0.2 0.3 0.4 0.5 0.6 0 25 50 75 100 125 150 in wg (Pa = n x 248) cfm (l/s = n x 0.47) in w.g. (Pa = n x 248) Net Supply Net Exhaust Contacts 22.50" (572mm) 21.50" (546mm) 10.20" (259mm) 17.20" (436mm) 15.60" (396mm) Stale Air To Outside Stale Air From Inside Fresh Air From Outside Fresh Air To Outside

wall on which the supply and exhaust hoods will be mounted. • Have a nearby power supply 120 Volts, 60Hz. (power cord is 3 feet long) • Mount the unit as level as possible in order to allow proper condensate drainage. • Have access to a water drain for the condensate of the unit during defrost. • Have a certain amount of heat around the unit (attic installation is not recommended). • Installations close to the living space, such as closets, should be design and to minimize noise or vibration transfers. • Have access for future maintenance. (10” is recommended for removal of core) 2 Install the drain hose, making a “P” trap INSTALLATION PRACTICAL TIPS 1 Install the drain nipple. INSTALLING DRAIN LINE - Drainline not included in kit Through normal operation and during its defrost mode, the HRV may produce some condensation. This water should flow into a nearby drain, or be taken away by a condensate pump. The HRV and all condensate lines must be installed in a space where the temperature is maintained above the freezing point. A “P” trap should be made in the drain line. This will prevent odors from being drawn back up into the unit. MOUNTING - EASY WALL MOUNT LOCATION The HRV must be located in a heated space where it will be possible to conveniently service the unit. Typically the HRV would be located in the mechanical room or an area close to the outside wall where the weatherhoods will be mounted. If a basement area is not convenient or does not exist, a utility room or laundry or closet may be used. Attic installations are not normally recommended due to: - the complexity of work to install - freezing conditions in the attic - difficulty of access for service and cleaning Connecting the following appliances to the HRV is not recommended, including: - clothes dryer - range top - stovetop fan - central vacuum system These appliance may cause lint, dust or grease to collect in the HRV , damaging the unit. NOTE: Connecting any of these type of appliances to the HRV will invalidate your warranty ELECTRICAL 3 prong plug-in power card. Attach bracket to wall, lift unit (26 lbs (12 kg) VHR 704) & slide nuts into slots on bracket, tighten screws to secure unit to bracket. Insert the safety screws & place wall bumpers to level off the unit. Safety screws (included) Place bumpers on back of unit (included) 16” (406mm)

opening. Attach the hood to the outside wall with mounting screws. Repeat the installation procedure for both the Supply and Exhaust hood. 2 Pull the insulated flexible duct through the opening until it is well extended and straight. Slide the duct’s inner vinyl sleeve over the hood collar and secure, pull the insulation over the duct and then the vapor barrier over the sleeve and secure with duct tape. 4 Using a caulking gun, seal around both hoods to prevent any leaks. 1 Using the collar of the out- side hood, outline the intake & exhaust holes to be cut. The holes should be slightly larger than the collar to allow for the thickness of the insulated flexible duct. Cut a hole for both the intake and exhaust hoods. • Decide where your intake and exhaust hoods will be located. PRACTICAL TIPS INSTALLING DUCTS GOING TO / FROM OUTSIDE A well designed and installed ducting system will allow the HRV to operate at its maximum efficiency. Always try to keep duct runs as short and straight as possible. See Installation Diagrams for installation examples. INSTALLING THE DUCTING TO THE WEATHERHOODS The inner liner of the flexible insulated duct must be clamped to the sleeve of the weatherhoods (as close to the outside as possible) and to the appropriate port on the HRV. The insulation should remain full and not be compressed. The outer liner, which acts as a vapor bar- rier must be completely sealed to outer wall and the HRV using tape and or caulking. A good bead of high quality caulking (preferably acoustical sealant) will seal the inner flexible duct to both the HRV port and the weatherhood prior to clamping. To minimize air flow restriction, the flexible insulated duct that connects the two outside weatherhoods to the HRV should be stretched tightly and be as short as possible. Twisting or folding the duct will severely restrict air flow. Locating the Intake Weatherhood • Should be located upstream (if there are prevailing winds) from the exhaust outlet • At least 6’ (2m) away from dryer vents and furnace exhaust ( medium or high efficiency furnaces) • A minimum of at least 6’ (2m) from driveways, oil fill pipes, gas meters, or garbage containers • At least 18” (457mm) above the ground, or above the depth of expected snow accumulation • At least 3’ (1m) from the corner of the building • Do not locate in a garage, attic or crawl space Locating the Exhaust Weatherhood • At least 18” (457mm) above ground or above the depth of expected snow accumulation • At least 3’ (1m) away from the corner of the building • Not near a gas meter, electric meter or a walkway where fog or ice could create a hazard • Not into a garage, workshop or other unheated space When installing the weatherhood, it’s outside perimeter must be sealed with exterior caulking. Model Description RC4 4” Roof cap UEV4 4” Soffit vent HS4W 4” Louvered shutters * Application for Supply or Exhaust

The stale air exhaust system is used to draw air from the points in the house where the worst air quality problems occur. Due to its lower capacity, the VH 704 is designed to vent from a single source point only and to the bath- room that is closest to the unit or directly out of the furnace return. Additional source points may be drained from if designed properly or installed on a separate Fantech fan bath kit to ventilate additional areas. Fantech bath kits are listed below and are ideal for both new construction and retro fit. Fantech bathroom kits for supplemental exhaust: • PB100 (H/F) 100cfm per fan • PB190 190cfm per fan • PB230-2 230cfm per fan • PB230 (H/F-2) 230cfm per fan • PB230 (HV/FV-2) 230cfm per fan • PB360-2 360cfm per fan • PBW110 (H/F) 110cfm per fan PRACTICAL TIPS INSTALLING DUCTS TO / FROM INSIDE • Building Codes and Combustion Appliance Installation Codes do not allow location of return air grilles or any opening such as a “breathing tee” in an enclosed room with spillage sus- ceptible combustion appliances. • The fresh air inlet from the HRV needs to respect a minimum distance from the furnace return drop to ensure proper air mixing and tem- perature at the furnace core. See fur- nace manufacturer for appropriate specifications. To maximize airflow in the ductwork system, all ducts should be kept short and have as few bends or elbows as possible. Forty-five degree are preferred to 90º elbows. Use “Y” tees instead of 90º elbows whenever possible. All duct joints must be fastened with screws or duct sealant and wrapped with a quality tape to prevent leakage. Aluminum foil duct tape is recommended. Galvanized ducting from the HRV/ERV to the living areas in the house is recommended whenever possible, although flexible duct can be used in moderation when necessary. Warning: The VHR 704 should be installed with a 4” (100mm) duct system that has less than 80 ft (25m) of equivalent duct length on the supply and on the exhaust side. If longer runs are required, increasing the duct diameter or following the instructions below might help. It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform as intended. All air movement devices have a performance curve. The amount of air (CFM) that an HRV will deliver is directly related to the total external static pressure (E.S.P.) of the sys- tem. Static pressure is a measure of resistance imposed on the blower by length of duct work/number of fittings used in duct work, duct heater etc. SUPPLY AIR DUCTING In homes without a forced air furnace, fresh air should be supplied to all habitable rooms including, bedrooms and living areas. It should be supplied from high wall or ceiling locations. Grilles that diffuse the air comfortably such as Fantech Contour Grilles are recommended.To avoid possible noise transfer through the ductwork system, a short length (approximately 12”, 300 mm) of nonmetallic flexible insulated duct should be connected between the HRV and the supply/exhaust ductwork system. If the floor is the only option available, then special care should be taken in locating grilles. Areas such as under baseboard heaters will help to temper the air. Also optional inline duct heaters are available for mounting in the supply duct work to add heat if required.In homes with a forced air furnace, you may want to connect the HRV to the furnace ductwork (see information below).

Fully Dedicated System (suggested for new construction) Stale air drawn from key areas of home (bathroom, kitchen, laundry) Fresh air supplied to main living areas NOTE* VHR 704 should be mounted with its duct connec- tions on top or similar.

Example diagram only-duct configuration may change depending on model Partially Dedicated System Stale air drawn from key areas of home (bathroom) Fresh air supplied to main living areas via the forced air system. NOTES: 1.Furnace blower may be required to operate when HRV/ERV is on to provide good air distribution. 2.Weatherhood arrangement is for drawing purposes only. 3.Due to the differences in pressure between the HRV/ERV and the equipment it is being connected to, the HRV/ERV’s airflow should be confirmed on site, using the balancing procedure found in the installation manual. If a release is required due to the furnace pulling too much air from the HRV/ERV, special care and attention is needed to its design. DIRECT CONNECTION of the SUPPLY AIR STREAM to the FURNACE COLD AIR RETURN (Stale air drawn from key areas of home) Building Codes and Combustion Appliance Installation Codes do not allow location of return air grilles or any opening such as a “breathing tee” in an enclosed room with spillage susceptible combustion appliances. NOTE* VHR 704 should be mounted with its duct connec- tions on top or similar.

1 For this flow measuring station, cut the duct and place the flow measuring station between each section of duct. Make sure that the flow measuring station’s air direction arrow points in the direction of the airflow. Secure the flow measuring station with duct tape. 2 Before taking the reading, make sure that the magnehelic gauge is level and at 0. Refer to the flow measuring station’s chart to determine your unit’s airflow velocity. 3 Adjust the “Supply Air Out” damper until you reach the desired velocity. Follow the previous steps to adjust the “Exhaust Air Out” damper, if needed. B Measure here Measure here 12” (300 mm) 12” (300 mm) • To avoid airflow turbulence and incorrect readings, the airflow velocity should be measured on steel ducting a minimum of 12” (300 mm) from the unit or elbow and before any transition. AIRFLOW STATION (GRID) METHOD * Fantech’s superior design and use of EBM motors results in a steep fan curve that usually does not require balancing. Commissioning the system after installation is recommended which include confirming the proper operation of the system and how it interacts with other components within the home.

cleaned every three months or when they appear dirty. Wash in warm sudsy water (mild detergent) or use a soft brush vacuum. The filters should be replaced when they can no longer be cleaned properly. PRACTICAL TIPS • To prevent electrical shock, check that the unit is unplugged before doing any repairs or maintenance. • A yearly inspection is recommended to ensure the efficiency and trouble- free use of your system. Run through the system and verify the different operating modes. HEAT RECOVERY CORE FILTERS The motor - The motors are factory balanced and lubricated for life. They require no maintenance. The unit - The inside of the unit should be vacuumed yearly. Be careful not to damage any of the mechanical components and elec- trical connections. Outside hoods - The outside hoods need to be checked every season to make sure there are no leaves or insects blocking the airflow. Check regularly that there are no pollu- tants near the intake hood. Make sure they are clear of any snow accumulation during the winter months. Clean Core and Filters Every 3-6 Months. Unplug unit before doing any repairs or maintenance a) Open access door. b) Carefully grip handle of core and pull out. Core will slide out of the channel. c) Once removed from the cabinet remove filters. d) Wash core in warm soapy water (do not use dishwasher). e) Install clean core by: a) First mounting the bottom flange of the core guide into the bottom channel approximately 1/4” (6mm). b) Mount the left or right side flange of the core guide approximately 1/4 “ (6mm) followed by the other side. c) Mount the top flange of the core guide into the top channel approximately 1/4” (6mm). d) With all four corners in place and the core straight and even, push hard in the center of the core until the core stops on the back of the cabinet. f) Install the clean filters. CAUTION MAKE SURE UNIT IS UNPLUGGED BEFORE ATTEMPTING ANY MAINTENANCE WORK The following components should also be inspected regularly and well maintained. The heat recovery core needs to be checked and cleaned every six months. The core can be cleaned using a mild soap and water. Rinse thoroughly. Handle with care. Hot water and a strong detergent will damage the heat recovery core. The drain pan and drain line - Units with drain lines should have their line and connection checked regularly. Filters need to be checked regularly

months. This is when problems will be most apparent since condensation on the windows will often occur. The colder the outside temperature, the greater the risk of condensation in the home. The average relative humidity should be maintained between (30-60) to avoid conden- sation. Low speed continuous ventilation with high speed override is recommended. A Heat Recovery Ventilator (HRV) is designed to bring fresh air into a building while exhausting an equal amount of stale air. During the winter months, the incoming cold fresh air is warmed by utilizing the heat recovered from the stale air before it is exhausted to the outdoors. During sum- mer months when the indoor space is air conditioned, the HRV will help in cooling the incoming fresh air with the stale air that is being exhausted. Powrmatic HRV’s are designed to run continuous or on intermittent, giving the homeowner complete control over their air quality. Continuous low speed ventilation is recommended, which will help eliminate carbon dioxide, voc’s and other gases as well as freshen up the home. Intermittent high speed ventilation can be obtained through a variety of optional remote controls found in this manual. Below are some examples of seasonal operation of an HRV. Spring: Temperatures are more moderate and become warmer each day. To keep the humidity and tem- perature uniform, set the dehumidistat higher (if installed). You may also switch the HRV to standby mode if desired. Summer: The air is sometimes hot and humid. To stop the warm humid air from entering, set the dehumidistat at its highest level. If the Intellitek series controller is installed, the air exchanger can be set to cycle the unit on and off as desired from that wall control. However, continuous ventilation is recommended. Fall: Rain and rapid temperature changes make it diffi- cult to control the internal humidity level and may result in condensation on the windows. A remote dehumidistat may help give greater control over the inside environment. The entire line of SHR/VHR series Heat Recovery Ventilators comes equipped with Fantech's new electronic uni-control board which offers a wide variety of features making it the ultimate ventilation control system. Fantech engineers have used the latest technology to provide solid, trouble free operation under any conditions. The Fantech uni-control board offers stand alone operating capabilities as well as an exclusive 2 wire communication to most external controls. The trouble-free optional controls include: two different rotary dial dehumidistats, an air quality sensor (3 wire communication required), a 15 minute remote push-button timer, as well as the most sophisticated line of remote wall mounted controls, the Intellitek 5MR. An on-board diagnostic LED helps find problems quickly and efficiently. For example the LED can be used to signal a broken or shorted electronic wall control wire. Electronic air temperature probe gives this board accurate readings in order to minimize unnecessary defrost operation, and the on-board jumpers provide the user with the option of adjusting defrost time and sequence to optimize performance under abnormal conditions. The defrost operation is automatic and is usually never adjusted. 2. Defrost (SHR/VHR Models) The automatic defrost cycle SHR/VHR models of HRVs consists of a fan shutdown. When the supply air stream temperature goes below -5°C (23°F), the supply motor shuts down and the exhaust motor goes into high speed. Ambient air is passed through the unit for a period of 5 minutes. The supply motor will then re-start and run at the preset speed. The exhaust motor will also slow down to the preset speed, and the unit will operate in the run cycle for 25 minutes. This fan shutdown defrost cycle continues until the sup- ply air stream rises above 0°C (32°F). MODES OF OPERATION 1. Continuous / Ventilation Mode In this mode of operation both fans are operating and exchanging air with the outside. The heat recovery venti- lator (HRV) constantly exchanges the air at the rate you select, either at low or medium speed, and switches to high speed when activated by an optional remote control. The "Low" and "Med" fan speed selection will cause the unit to operate in continuous exchange mode at an exchange rate of 35% and 50% maximum airflow rating respectively. Continuous mode is recommended, since pollutants are slowly but constantly being generated in your house. Air from House Air from Outside Air to House Air to Outside Air from House Air to outside

where contaminated such as moisture and odors, are produced. Simply push the button and the HRV will activate to high speed for 15 minutes. Up to 5 electronic timers can be installed throughout the building at a distance of up to 500 feet (152 meters) from the HRV. Dehumidistat II - The wall mount dehumidistat II offers the same features of the dehumidistat I plus additional off/on control for the HRV. Dial illuminates when in override mode. RTS 3 - The RTS 3 is designed to provide an intermittent boost to the Heat/Energy recovery ventilator. Depressing the fan control button will energize the HRV/ERV system into high speed from a low or standby mode. The ventilator can be set to continue on high for 20, 40, or 60 minutes by pressing the control button one, two or three times. Pressing the button a fourth time will cancel the timing function. EDF 1 - The EDF 1 is designed to provide 3 modes of operation to the Heat/Energy recovery ventilator. Pressing the “Push” button once initiates the unit to run at a continuous low speed of operation (green). Depressing the button twice allows the ventilator to run for 20 minutes and then turns off for 40 minutes (yellow). Touch the button a third time and the system will run continuous on high (red). The ven- tilation system will stay on the last function selected until it is changed. Dehumidistat I - The wall mount dehumidistat monitors the humidity level in the area it is installed. When the humidity level rises above the desired set- point, the HRV will activate to high speed/override mode. Once the humidity level returns to desired condition, the unit will return to the normal mode. To avoid window condensation: • It is not necessary to change the humidity control every day. Monitor the average weekly temperature or experiment with various settings until you find a level that is comfortable for you. Adjust the control when needed. PRACTICAL TIPS * All controls are low voltage. 18 to 24 gauge wire is recommended. OPTIONAL REMOTE CONTROLS OPERATION (CONT'D) NOTE: A dehumidistat is ideal for use in energy efficient houses where indoor humidity (during the heating season) is higher than outdoor levels. High humidity is a major cause of structure damage and IAQ problems such as mold and mildew. 2 wire installation 4 wire installation 3 wire installation 2 wire installation 2 wire installation 5MR INTELLITEK MULTI-FUNCTION WALL CONTROL Control multiple func- tions of your Powrmatic HRV with one slimline wall con- trol. Two wire connec- tion simplifies installa- tion. Use one EDF5 per PHRVR installed. OVERRIDE SPEED CONTROL Push to select override speed of unit. CYCLE CONTROL Set unit to cycle on 15, 20, or 30 min- utes every hour MODE SPEED Set Unit to Low, Medium or High Speed OVERRIDE TIMER When pressed, unit will provide high speed ventilation for one 15, 30 or 60 minute period. DIGITAL DISPLAY Shows Indoor Humidity Level This control will not read below 29% RH DEHUMIDISTAT CONTROL (see description on top of this page) MAINTENANCE LIGHT Light comes on when it’s time to clean unit. POWER On/Off and Reset MODES Select Intermittent, Recirculation or Continuous Ventilation Modes OPTIONAL INTELLITEK CONTROL NOTE: When an Intellitek control is installed, the rocker switch located on the right hand side of the HRV will be automatically deactivated giving the user complete control from wherever he/she wishes to mount the control pad. NOTE: The override speed cannot be set at a fan speed lower or equal to the normal operating fan speed. For example, if the unit is normally operating at a medium fan speed, the override fan speed will be automatically set to high. NOTE: 5MR model, changing the override speed will change default override speed for other external controls. EXAMPLES: If on the 5MR control, you have set the override control at medium, and you start an external remote control (15 min. timer), the unit will run at medium speed for 15 min. PRACTICAL TIPS 4 1/2" (114 mm) Width = 4 1/2" (110mm) Height = 5 1/8" (130mm) Thickness = 5/8" (15mm) 5 1/8" (130 mm)

Dehumidistat control is set too high Sudden change in temperature Storing too much wood for heating Dryer vent exhaust is inside home Poor air circulating near windows Well sealed basement door is closed Improper adjustment of dehumidistat con- trol Air is too dry Air is too humid Persistent condensation on window Increase the desired level of humidity. Change ventilation mode from continuous mode to standby. Balance HRV Reduce the desired level of humidity. Combine this step with use of co tinuous exchange mode. Wait until outside temperature stabilizes (winter). Heating will also improve situation. Store a majority of your wood outside. Even dried, a cord of wood con- tains more than 20 gallons of water. Arrange outside vent for dryer. Open curtains or blinds. Bay or bow windows may require mechanical method. Balance HRV Open the door or install a grill on the door. Reduce the desired level of humidity. Combine this with the use of con- tinuous exchange mode. Balance HRV -Clean exterior hoods or vents -Remove and clean filter -Remove and clean core -Check and open grilles -Have electrician check supply voltage at house -Check duct installation -Increase the speed of the HRV -Have contractor balance HRV -Locate the grilles high on the walls or under the baseboards, install ceiling mounted diffuser or grilles so as not to directly spill the supply air on the occupant (eg. Over a sofa) -Turn down the HRV supply speed. A small duct heater (1kw) could be used to temper the supply air -Placement of furniture or closed doors is restricting the movement of air in the home -If supply air is ducted into furnace return, the furnace fan may need t run continuously to distribute ventilation air comfortably -Balanced HRV -Note: minimal frost build-up is expected on cores before unit initiates defrost cycle functions -Have HVAC contractor balance the HRV -Tape and seal all joints -Tape any holes or tears made in the outer duct covering -Ensure that the vapor barrier is completely sealed. -1/4” (6mm) mesh on the outside hoods is plugged -Filters plugged -Core obstructed -House grilles closed or blocked -Dampers are closed if installed -Poor power supply at site -Ductwork is restricting HRV -Improper speed control setting -HRV airflow improperly balanced Poor Air Flows -Poor location of supply grilles, the airflow may irritate the occupant -Outdoor temperature extremely cold Supply air feels cold -HRV air flows are improperly balanced -Malfunction of the HRV defrost system HRV and / or Ducts Frosting up -Incomplete vapor barrier around insulated duct -A hole or tear in outer duct covering Condensation or Ice Build Up in Insulated Duct to the Outside HRV out of balance HRV out of balance HRV out of balance

selection switch Diagnostic LED U 15-minute timer (up to 5 timers) Dehumidistat 2 wires Dehumidistat On/Off 4 wires Mechanical Crank Timer 2 wires and / or and / or (1 only) Air Quality Sensor CUR SW DEHUM N.C. N.O. TIMER EDF COM FURNACE INTERLOCK + - + - + - IN COM EDF5 or EDF2 (not shown) EDF1 RTS3 (observe plarity) * Wiring diagram of complete unit inside of access panel 2 wires 2 wires 3 wires

THERMOSTAT TERMINALS FURNACE 24-VOLT TERMINAL BLOCK FOUR WIRE TWO WIRE heating only TWO WIRE COOLING SYSTEM HRV ELECTRONIC BOARD W R G C Y W R G Y Alternate Furnace Interlock Wiring THERMOSTAT TERMINALS FURNACE 24-VOLT TERMINAL BLOCK FOUR WIRE TWO WIRE heating only TWO WIRE COOLING SYSTEM HRV ELECTRONIC BOARD WIRE JOINT ELECTRICAL CONNECTIONS (CONT'D) Caution: • Never connect a 120 volt AC circuit to the terminals of the Accessory Control Contacts. Only use the low voltage class 2 circuit of the fur- nace blower control. For a Furnace Connected to a Cooling System: • On some older thermostats, energizing the R and G terminals at the furnace has the effect of energizing Y at the thermostat and thereby turning on the cooling system. If you identify this type of thermostat, you must use the “Alternate Furnace Interlock Wiring”. PRACTICAL TIPS ELECTRICAL CONNEC- TION TO A FURNACE Standard Accessory Control Contact Alternate Accessory Control Contact Item #: 403409 Rev Date: 030806 Fantech, reserves the right to modify, at any time and without notice, any or all of its products’ features, designs, components and specifications to maintain their technological leadership position. United States 1712 Northgate Blvd., Sarasota, FL. 34234 Phone: 800.747.1762; 941.309.6000 Fax: 800.487.9915; 941.309.6099 www.fantech.net; [email protected] Canada 50 Kanalflakt Way, Bouctouche, NB E4S 3M5 Phone: 800.565.3548; 506.743.9500 Fax: 877.747.8116; 506.743.9600 www.fantech.ca; [email protected]